Titleblock properties

3 min read

When working in Revit, it is essential to understand the difference between sheets and title blocks. Sheets are the actual views that exist in the Project Browser, whereas title blocks are the families that are placed on the sheets. These two elements behave differently and have different parameters associated with them.

Once a sheet list has been created, it is possible to see all the parameters associated with the sheets. This list includes various instance parameters such as ‘Drawn By’ or ‘Approved By’. These parameters can be individually updated within the Sheet List or exported to BIMlink if you need to make batch changes.

Revit_Sheet schedule

The problem

Often, however, the title block family that resides on the sheet will have its instance parameters which control the visibility of key plans, north point, scale bars, etc. The problem, therefore, arises that none of the title block’s parameters are visible within the Sheet List. Since title blocks can’t be scheduled, this means that to adjust any instance parameters on a title block you need to navigate to each sheet, select the title block, and then modify its attributes in the Properties pallet. If you have a large number of title blocks to update, this can become very time-consuming. Of course, it is always possible to convert these instance parameters to type parameters within the title block family itself, but this isn’t always desirable.

Sheet instance properties
Title block instance properties

Dynamo automation

To solve this problem, one can generate a simple Dynamo script as illustrated below. The script first collects all the title block families loaded into the project and returns its ‘Sheet Number’. The title blocks are then alphabetically sorted and filtered based on the ‘Sheet Number’ parameter. In the example below, the script is collecting just the title blocks where the ‘Sheet Number’ parameter beginning with ‘A’. This prefix corresponds to our ‘Introductory’ drawing series.

The script then collects specific instance parameters associated with those title blocks. For example,  ‘Scale Bar 1-100’, ‘Project North’, and ‘True North’. These visibility parameters can then be updated by toggling between ‘True’ or ‘False’ in the Boolean node. This process will update the instance parameters across multiple title blocks instantaneously saving much manual labour.


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